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6_17a7.c
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C/C++ Source or Header
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1993-08-08
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507b
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21 lines
* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
* The C++ Answer Book */
* Tony Hansen */
* All rights reserved. */
/ x = v1 - v2
include <minmax.h> /* DELETE */
ector& operator-(vector &v1, vector &v2)
// allocate the new vector
int l = min(v1.p->length, v2.p->length);
vector *v = new vector(l);
// do the operations
float *f = v->p->f;
float *f1 = v1.p->f;
float *f2 = v2.p->f;
for (int i = 0; i < l; i++, f1++, f2++)
*f++ = *f1 - *f2;
return *v;